Automatic sear assembly for a rifle

An automatic sear assembly for a rifle, the assembly comprising:

• an automatic sear rotationally mounted about an axis, the automatic sear having an actuating portion which extends a first radial length from the axis in a first direction and a second radial length from the axis in a second direction which substantially opposes the first direction, wherein the automatic sear interfaces with a safe/fire selector switch and a hammer of the rifle;
• a sear lever rotationally mounted about the axis independently of the automatic sear, the sear lever extending a third radial length from the axis in substantially the same first direction, wherein the third radial length is greater than the first radial length;
• a first spring mounted about the axis and biasing the sear lever into physical contact with the automatic sear;
• and
• a second spring mounted about the axis and angularly biasing the automatic sear about the axis, wherein the second spring interfaces with the safe/fire selector switch.

An automatic sear assembly for a rifle, the assembly comprising:

• an automatic sear configured to be operatively coupled with a safe/fire selector switch and a hammer of the rifle;
• a sear lever disposed adjacent a rear surface of the automatic sear and extending beyond a height of the automatic sear;
• a helical torsion spring disposed adjacent the sear lever and the rear surface of the automatic sear and comprising a set of coils ending in first and second tangential legs configured to bias the sear lever into physical contact with the rear surface of the automatic sear;
• and
• a helical double-torsion spring disposed adjacent the sear lever and the rear surface of the automatic sear and comprising first and second sets of coils wound in opposing directions and having an unwound portion disposed there between, the first set of coils ending in a tangential leg configured to operatively interface with the safe/fire selector switch of the rifle, and the second set of coils ending in a radial over-center leg;
• wherein the automatic sear, the sear lever, the helical torsion spring, and the helical double-torsion spring share a rotational axis;
• wherein the assembly further comprises:
• a bushing inserted along the axis, the bushing having a slot formed therein;
• and
• a pin inserted within the bushing along the axis, the pin having a groove formed therein;
• wherein the groove and the slot are configured to align when the pin is inserted within the bushing and configured to receive the radial over-center leg of the helical double-torsion spring;
• and
• wherein rotational deflection of the sear lever in a first direction about the axis causes the sear lever to rotate away from the rear surface of the automatic sear, and rotational deflection of the sear lever in a second direction about the axis imparts rotation to the automatic sear causing the automatic sear to sear with the hammer of the rifle.